https://www.gamespot.com/articles/call-of-duty-black-ops-4s-battle-royale-blackout-m/1100-6461666/

This week, players will have their first opportunity to try Call of Duty: Black Ops 4's new battle royale-style mode, Blackout, thanks to a private beta session Activision is hosting on PS4, Xbox One, and PC. Alongside the launch of the beta, the publisher has shared some new details about the mode, revealing more about its map, selection of playable characters, and the kinds of items and vehicles you'll encounter as you fight to be the last player or team remaining.

As previously confirmed, the Blackout beta will support up to 80 players--20 players fewer than Fortnite and PUBG, the two games that helped popularize the battle royale genre, support. However, developer Treyarch says the final player count is still subject to change and may be tweaked before launch based on the feedback it receives from players during the beta session.